Office Support / Office 365 Admin / Domains

Change your email address to use your custom domain

Your initial email address in Office 365 includes, like You can change it to a friendlier address like You'll need your own domain name, like first. If you already have one, great! If not, you can learn how to buy one from a domain registrar.

Then set it up by doing the following.

  1. Sign in to Office 365 with your work or school account.

  2. Go to the Manage domains page.

  3. On the Manage domains page, choose Add domain.

  4. Follow the steps to confirm that you own your domain and to change your email address.

You’ll be guided to get everything set up correctly with your domain in Office 365.

Want to see the steps first? Check out the video:

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Applies To: Office 365 Admin, Office 365 Small Business Admin

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